We present an ab--initio calculation of the line shape of the photoabsorption spectrum of Na_8 and Na_9+ clusters at zero temperature, including for the first time the polarization effect driven by the electron-plasmon coupling. The latter are found to yield a significant lowering of the energy centroid of the plasmons, whereas the main effect the electron-phonon coupling is to smooth the spectrum

The role of quantal fluctuations in the optical response of small metal clusters / A. Fortini, M. Mazzola, A. Mina, D. Provasi, G. Colo', G. Onida, H.E. Roman, R.A. Broglia. - In: JOURNAL OF PHYSICS. B, ATOMIC MOLECULAR AND OPTICAL PHYSICS. - ISSN 0953-4075. - 38:11(2005), pp. 1581-1589.

The role of quantal fluctuations in the optical response of small metal clusters

A. Fortini;D. Provasi;G. Colo';G. Onida;H.E. Roman;R.A. Broglia
2005

Abstract

We present an ab--initio calculation of the line shape of the photoabsorption spectrum of Na_8 and Na_9+ clusters at zero temperature, including for the first time the polarization effect driven by the electron-plasmon coupling. The latter are found to yield a significant lowering of the energy centroid of the plasmons, whereas the main effect the electron-phonon coupling is to smooth the spectrum
Atomic and molecular clusters, Optical properties of clusters, Plasma and collective effects in clusters.
Settore FIS/04 - Fisica Nucleare e Subnucleare
Settore FIS/01 - Fisica Sperimentale
Settore FIS/03 - Fisica della Materia
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/11546
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